Koh Bon is a small granite rocky island about 20km northeast of the northernmost tip of the Similan Islands. On the surface it’s just rock topped with a little greenery. No beaches or anywhere to land on the island, though there is a hole that passes from one side of the island to the other. There is a sheltered bay that is sometimes used for night dives. There are 2 main dive sites at Koh Bon. The most dived is the ridge that sticks out from the western side of the island and continues underwater down to a depth of 40 meters. There is also a deep pinnacle on the north side of the island. Koh Bon is on the route of most Thailand liveaboard trips.
Koh Bon Island near the Similan islands
Koh Bon Ridge
Maybe the best place to find manta rays in the region. The dive site follows a ridge jutting out from the west of the island, covered in pastel shaded soft corals, which drops to depths of 35-40m. Mantas are often spotted over the ridge or in the deep water to the South. Leopard sharks are also common in the deeper water and this is a good location to find the elusive purple fire goby! The reef here is mostly rocky but marine life is good, often large schools of sweetlips or snappers.
Koh Bon Dive Site Map
Koh Bon Pinnacle
If you head northeast of the ridge, about one hundred metres or so from the rocky reef that encircles Koh Bon island, there is a deep pinnacle which tops out at 18m depth, but dropping to over 50m. It is certainly a deep dive and great for experienced divers who want something a bit different. Koh Bon pinnacle can be a great place to find mantas or leopard sharks. The north side of the pinnacle drops off steeply while on the south side you can make a long swim at 28 – 30m depth to reach the main island reef.
Koh Bon is on the route of most Thailand liveaboards. There are also day trips possible to Koh Bon (2 dives) on Sunday or Wednesday with pick up in Phuket or Khao Lak.
Contact Sunrise Divers
18 Years of Local Experience
Sunrise Divers has been operating in Phuket, Thailand since 1999 logging thousands of dives all over the region. We know the area, we know the dive sites, we know the boats. Let us help you find the right trip!
A Real Dive Center With A Real Shop
Sunrise Divers is not just a pretty website. We are right here to help you with a PADI 5 Star shop, helpful and experienced staff, quality rental equipment and plenty of local knowledge. We hope to meet you in person!
Liveaboard Price Guarantee
We advertise all trips at the official rates agreed with the boat operators. If you are offered the same trip on the same liveaboard at a lower price, tell us! We promise to get you the best trip at the best possible price!
We Make Booking Liveaboards Easy
With our many years of experience, booking with Sunrise Divers is quick and easy. Got a question? We'll answer! Need to talk? Call us! Easy online booking with credit card payment is possible for most trips. We know the liveaboards and the area better than anyone!
Similan Island Thailand Liveaboards
Deep Andaman Queen
Cruises in the Similan Islands / Richelieu Rock and also into Myanmar (Burma) with the liveaboard "Deep Andaman Queen". This stylish and comfortable liveaboard started operating in November 2003 and was operating in Thailand for 7 years before sp [...]
Prices starting from 7500 / day
Enjoy the Similan Islands and Richelieu Rock aboard the liveaboard Pawara. She is a one of a kind, custom built diving vessel that combines the modern amenities of today's living and Thai craftsmanship. Pawara is extremely spacious. With her 35 m [...]
Prices starting from 6425 / day
Bavaria is a brand new liveaboard launched in late 2015, based in Khao Lak and offering a mixed schedule of 3 or 6 night trips in Thailand and 6 night trips in Myanmar. The boat was designed by her German owner who has many years of experience he [...]
Prices starting from 6900 / day
The luxury liveaboard Diva Andaman runs 6 night trips in Thailand and Myanmar. The boat was completed in 2009 and has been one of our most popular boats. Early booking is suggested. It's all about service, relaxation, great food, and don't forget [...]
Prices starting from 16600 / day
MV La Galigo is a traditional Indonesian style 2 mast Phinisi sailboat built of ironwood and teak in Bira, South Sulawesi in 2012. She is running year round trips in Komodo and Raja Ampat. There is space for 14 guests only, with several cabin typ [...]
Prices starting from 400 / day
MV Raja Manta was built in Thailand and launched in 2011. She moved to Indonesia to join the Blue Manta with trips starting August 2016. The Raja Manta is a high quality boat, modern and spacious and will take a maximum 20 guests on Indonesia tri [...]
Prices starting from 425 / day